Thanks to great advancement within deep sea technology, the right search area and information, it is now possible to find Atze ́s Temple and the
Survey Group Denmark is planning the first expedition to a definite area in the Atlantic Ocean using the Seaglider M6 from Kongsberg Maritime.
See the Seaglider ́s data sheet here:
The Seaglider M6 is an unmanned, selfswimming vehicle that can be equipped specially for detecting what is on the seabottom. That is, it can be
programmed to swim back and forth scanning the seafloor for manmade objects. In this way remains of Atze ́s Temple,
of the city, harbour etc. can be located.
A better proof you cannot get except for going down there with a ROV (remotely operated vehicle) or a manned uboat. This is much more
expensive, and therefore options for the next step.